Exploring Adding and Subtracting Rational Expressions

What does the mean represent in a data set?

• The middle value when data is ordered

• The difference between the highest and lowest values

• The average value of the data set

• The most frequently occurring value

How is the median calculated in an ordered data set?

• By adding all values and dividing by the number of values

• By averaging the two middle numbers in an even-sized set

• By finding the most frequent value

• By subtracting the smallest value from the largest

What is the mode of a data set?

• The value that appears most frequently

• The average of all data points

• The difference between the highest and lowest values

• The middle value of the data set

If a data set has no repeated values, what is the mode?

• The middle value

• The average of all values

• There is no mode

• The value at the start of the set

How do you calculate the range of a data set?

• Add all values and divide by the total number of data points

• Identify the middle value in an ordered set

• Subtract the smallest value from the largest value

• Find the value that appears most often

What does the range tell you about a data set?

• The middle value of the data

• The most frequent value

• The average value of the data

• How spread out the values are

What is an outlier in the context of data sets?

• The most common value in the set

• The middle value of the set

• A value significantly higher or lower than others in the set

• The average value of the set

Which measure of central tendency is most affected by outliers?

• Range

• Mode

• Median

• Mean

When is it most appropriate to use the median as a measure of central tendency?

• When the data set has outliers

• When the data set values are all the same

• When the data set is small

• When the data set has no outliers

In a data set, if the mode is 72, what does this indicate?

• 72 is the range of the data

• 72 is the middle value

• 72 appears most frequently

• 72 is the average value